Annealing-box.



w. R. WILSON. ANNEALING BOX. APPLICATION FILEDFEB. 20, 1915- Pat-ented Apr. 18, 1916.

- 2 SHEETSSHEET I.

wmm

-W. Rn WlLSON.

ANNEALING'BOX. APPLICATION man FEB. 20, 1915.

Patented Apr. 18, 191.6

2 SHEETS-SHEET 2.

preterit sits WALTER R. WI LSON, OF WARREN, OHIO.

ANNEALING-BOX.

Specification of Letters Patent.

Patented Apr. in, l lfi.

Application filed February 20, 1915. Serial No. 9,640.

an. improved. and highly-efiicient annealing box of maximum durabllty, the box being so constructed as to permit of the greatest amount of expansion and contraction of 1ts confining walls in every direction without danger of cracking, there being no straight lines in any wall.

In the accompanying drawing, Figure l is a side elevation. 2 is a sectional view on line 22-, Fig. 1. Fig. 8 is a top plan view. Fig. is a fragmentary sectional view on line 4;+i. Fig. 1. Fig. 5 is an enlarged fragmentary view. Fig. (i is a diagrammatic view.

In the drawings 1 have shown the box as being of rectangular form, the side walls 1 and 2 being integral, and two of the side walls provided with the usual trunnions 3. The walls and the top are so formed as to allow of maximum expansion and contraction at all points, no part of the inner or outer surfaces presenting. an extended uninterrupted plane; This I attain by forming in the walls and top parallel rows of outwardly-extending spaced-apart bulges l,

and intermediate these rows I form spaced depressions 5, the bulges and depressions be ing in staggered or broken joint arrange ment, that is, intersecting each other on oblique lines. The bulges 4 are separated on vertical and horlzontal l1nes by swelllngs 6 of concavo-convex formation, the concavities taking form from the inward sloping of the bulges 4 on vertical and horizontal lines, and the convexities by the swellings between the depressions on like lines.

As shown in Fig. 2, the inner faces of the walls and top are formed similarly to the outer faces, the depressions 5 of the latter forming the inwardly-extending bulges 4 and the bulges l of the outer face the depressions 5 of the inner, the spacings between these parts corresponding to the described formation relative to the outer face.

It will be apparent that the walls and top of the box are so formed that every line and angle is sinuate, thus providing the greatest possible surface for expansion and contrac-- tion and preventing cracking of the metal, there being no straight lines liable to give under stress.

I claim as my invention:

An annealing box comprising an integral structure having its walls formed with parallel rows of outwardly and inwardly bulged portions, those of one row being in staggered or broken joint arrangement relatively to those of an adjacent row, the spaces between the outwardly bulged portions of adjacent rows and between the intermediate inwardly bulged portions being concavo-convexed.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WALTER R. wnis on.

Witnesses WM. G. BALDWEN, CARL F. THOMAS. 

